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Date:	Sun, 22 Jan 2023 17:01:38 -0500
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Subject:	Re: [bug?] cygwin cannot mount smb shares beginning with underscore;
	"Invalid argument"
To:	cygwin AT cygwin DOT com
Cc:	Brian Inglis <Brian DOT Inglis AT shaw DOT ca>
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From:	Jeremy Hetzler via Cygwin <cygwin AT cygwin DOT com>
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Thanks Brian and Corinna.

Jeremy

On Sun, Jan 22, 2023, 14:57 Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
wrote:

> On 2023-01-22 12:21, Corinna Vinschen via Cygwin wrote:
> > On Jan 21 11:30, Jeremy Hetzler via Cygwin wrote:
> >> First, thank you for many years of Cygwin.
> >>
> >> I'm unable to get Cygwin to mount Windows SMB shares where the share
> >> name begins with underscore. mount gives an error "Invalid argument".
> >
> > Yes, that's actually a bug.  The mount code path in Cygwin checks
> > the path for being a share (i.e. \\server\share\... syntax)
> >
> > The code, which, incidentally, has only been marginally changed since
> > its inception pre-2000, is expecting that server name as well as share
> > name both start with an alphanumeric ASCII char.
> >
> > That means, right now you can't mount servers and shares starting with
> > any character other than [0-9a-zA-Z].  D'oh.
>
>
> https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/naming-conventions-for-computer-domain-site-ou
>
> looks like embedded not initial or final "-" hyphen/minus is also allowed
> as
> well as an initial "_" underscore like DNS names.
>
> > I pushed a patch and the Cygwin test release 3.5.0-0.138.g6338d2f24a60
> > is building while I'm replying.  Should be up in an hour or so.
>
> --
> Take care. Thanks, Brian Inglis                 Calgary, Alberta, Canada
>
> La perfection est atteinte                      Perfection is achieved
> non pas lorsqu'il n'y a plus rien à ajouter     not when there is no more
> to add
> mais lorsqu'il n'y a plus rien à retirer        but when there is no more
> to cut
>                         -- Antoine de Saint-Exupéry
>
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